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为预测飞行员情境意识的变化情况,在前期建立的注意资源分配模型及情境意识模型基础上,考虑任务环境中信息成分重要度对情境意识水平的影响,并结合人的认知特性及贝叶斯条件概率理论,提出了一种新的情境意识量化模型和求解方法.为验证模型的效度,采用20名被试在不同任务条件下开展仪表监视实验,并采用情境意识全面测量技术(SAGAT,Situation Awareness Global Assessment Technique)、三维度情境意识评定技术(3-D SART,3-Dimensional Situational Awareness Rating Technique)、操作绩效和眼动测量4种方法,对不同任务条件下的情境意识水平进行测评.综合测评结果表明,根据预测模型计算所得的情境意识水平变化趋势与被试实际操作所获得的实验结果高度相关.提出的情境意识量化模型对指导驾驶舱人机显示界面设计和减少人为失误有一定的参考价值.
In order to predict the change of situational awareness of pilots, based on the resource allocation model and situational awareness model established in the previous period, the influence of the importance of information components on the level of situational awareness in the task environment is considered. Combined with human cognitive characteristics and Bayesian Conditional Probability Theory, a new quantification model and solution method of situational awareness are proposed.In order to verify the validity of the model, 20 subjects are used to carry out the instrument monitoring experiment under different tasks and adopt the comprehensive measure of situational awareness (SAGAT, Situation Awareness Global Assessment Technique, 3-Dimensional Situational Awareness Rating Technique, operational performance and eye movement measurement were used to evaluate the level of situational awareness under different tasks. The results of comprehensive evaluation show that the change tendency of situational awareness level calculated by the predictive model is highly correlated with the experimental results obtained by the actual operation of the subject.The proposed quantitative awareness model of situational awareness has some effects on the design of the cockpit man-machine interface and the reduction of human error The reference value.